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fix: set strings as attributes, non-strings as properties if property exists #13327

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merged 7 commits into from
Sep 19, 2024

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@Rich-Harris Rich-Harris commented Sep 19, 2024

Alternative to #12734. Closes #12664. This feels like a more principled approach to the problem: if something is a non-string and exists as a property on the element, set it as a property, otherwise set it as an attribute.

This allows us to handle some of the platform's oddities gracefully, without needing to ship a lookup to the browser: if a component contains <div translate="no">, then we disable translation on that element (with div.setAttribute('translate', 'no')). If it contains translate={false}, we achieve the same outcome with div.translate = false.

Draft because I just realised that we still need a lookup for SSR

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changeset-bot bot commented Sep 19, 2024

🦋 Changeset detected

Latest commit: 05b3542

The changes in this PR will be included in the next version bump.

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@@ -147,6 +147,19 @@ export function head(payload, fn) {
head_payload.out += BLOCK_CLOSE;
}

/**
* `<div translate={false}>` should be rendered as `<div translate="no">` and _not_

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how on gods green earth did we get here

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uSe THe PlaTfOrM

@Rich-Harris Rich-Harris merged commit b3f3915 into main Sep 19, 2024
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@Rich-Harris Rich-Harris deleted the set-strings-as-attributes branch September 19, 2024 21:06
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Successfully merging this pull request may close these issues.

Svelte 5: Some boolean attributes are incorrectly rendered with <svelte:element>.
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